package com.jd.pet.service.impl;

import com.jd.basic.service.impl.BaseServiceImpl;
import com.jd.pet.domain.PetType;
import com.jd.pet.mapper.PetTypeMapper;
import com.jd.pet.service.IPetTypeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * 业务实现类：
 */
@Service
public class PetTypeServiceImpl extends BaseServiceImpl<PetType> implements IPetTypeService {

    @Autowired
    private PetTypeMapper petTypeMapper;



    @Override
    public List<PetType> petTypeTree() {

        List<PetType> types = petTypeMapper.loadAll();
        Map<Long, PetType> map = new HashMap<>();
        for(PetType type: types){
            map.put(type.getId(),type);
        }

        List<PetType> tree = new ArrayList<>();
        for (PetType type:types){
            if (type.getPid() == null){
                tree.add(type);
            }else {
               Long pid = type.getPid();
                PetType parentType = map.get(pid);
                parentType.getChildren().add(type);
            }

        }

        return tree;
    }
}
